<template>
    <div class="goodsinfo-con">
        <transition
        @before-enter="beforeEnter"
        @enter="enter"
        @after-enter="afterEnter">
        <div class="ball" v-show="ballFlag" ref="ball">

        </div>
        </transition>
        
        <!-- 商品轮播图区域 -->
        <div class="mui-card">
    	<div class="mui-card-content">
	    <div class="mui-card-content-inner">
			<swiper :lunbotulist="lunbotu" :isfull="false"></swiper>
		</div>
			</div>
		</div>




        <!-- 商品购买区域 -->
        <div class="mui-card">
				<div class="mui-card-header">{{ goodsinfo.title }}</div>
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
						<p class="price">
                            市场价 :<del>￥{{ goodsinfo.market_price }}</del>&nbsp;&nbsp;&nbsp;&nbsp;销售价 :<span class="now_price">￥{{ goodsinfo.sell_price }}</span>
                        </p>
                        <p>购买数量 :<numbox @getcount="getselectedCount" :max="goodsinfo.stock_quantity" class="numbox"></numbox></p>
                        <p>
                            <mt-button type="primary" size="small">立即购买</mt-button>
                            <mt-button type="danger" size="small" @click="addshopcar()">加入购物车</mt-button>
                        </p>
					</div>
				</div>
			</div>



        <!-- 商品参数区域 -->
        <div class="mui-card">
				<div class="mui-card-header">商品参数</div>
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
						<p>商品货号 :{{ goodsinfo.goods_no }}</p>
						<p>库存情况 :{{ goodsinfo.stock_quantity }}件</p>
						<p>上架时间 :{{ goodsinfo.add_time | dataFormat }}</p>
					</div>
				</div>
				<div class="mui-card-footer">
                    <mt-button class="button" type="primary" size="large" plain @click="goDesc(id)">图片介绍</mt-button>
                    <mt-button class="button" type="danger" size="large" plain @click="goComment(id)">商品评论</mt-button>
                </div>
			</div>
    </div>
</template>

<script>
import swiper from '../subcomponent/swiper.vue'
import numbox from '../subcomponent/goodsinfo-nuber.vue'
export default {
    data() {
        return {
        id:this.$route.params.id,
        lunbotu:[],
        goodsinfo:{},
        ballFlag:false,
        selectedCount:1
        }
    },
    created(){
        this.getLunbotu()
        this.getGoodsInfo()
    },
    methods: {
        getLunbotu(){
            this.$http.get('api/getthumimages/'+this.id).then(result=>{
                if(result.body.status===0){
                    result.body.message.forEach(item => {
                        item.img=item.src
                    });
                    this.lunbotu=result.body.message;
                }
            })
        },
        getGoodsInfo(){
            this.$http.get("api/goods/getinfo/"+this.id).then(result=>{
                if(result.body.status===0){
                    this.goodsinfo=result.body.message[0];
                }
            })
        },
        goDesc(id){
            this.$router.push({ name:"goodsdesc" ,params:{id}})
        },
        goComment(id){
            this.$router.push({ name:"goodscomment" ,params:{id}})
        },
        addshopcar(){
            this.ballFlag=!this.ballFlag
            //拼接出一个，要保存到store 中 car 数组里的商品信息对象
            var goodsinfo={
                id: this.id,
                count: this.selectedCount,
                price:this.goodsinfo.sell_price,
                selected:true
                }
                //调用store中的 mutation 来将商品加入购物车
                this.$store.commit("addtocar",goodsinfo)
        },
        beforeEnter(el){
        el.style.transform="translate(0,0)"
        },
        enter(el,done){
            el.offsetWidth;
            const ballPosition=this.$refs.ball.getBoundingClientRect();
            const badgePosition=document.getElementById("badge").getBoundingClientRect();
            const xDist=badgePosition.left-ballPosition.left;
            const yDist=badgePosition.top-ballPosition.top;
            el.style.transform=`translate(${xDist}px,${yDist}px)`;
            el.style.transition='all 1s cubic-bezier(.4,-0.3,1,.68)';
            done()
        },
        afterEnter(el){
            this.ballFlag=!this.ballFlag;
        },
        getselectedCount(count){
            this.selectedCount=count;
            console.log("父组件拿到的值是:"+this.selectedCount)
        }
    },
    components:{
        swiper,
        numbox
    }
}
</script>

<style>
.goodsinfo-con{
    background-color: #ccc;
    overflow: hidden;
}
.now_price{
    color: red;
    font-weight: bold;
}
.price{
    margin-left: -5px;
}
.numbox{
    display: inline;
}
.mui-card-footer{
    display: block;
}
.button{
    margin: 10px 0;
}
.ball{
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background-color:red;
    position: absolute;
    z-index: 99;
    top: 390px;
    left: 140px;
}
</style>
